3 ফলাফল
SUMMARY OF THE INVENTION
The present invention relates to compounds of the formula ##STR2## wherein Ra is hydrogen or halogen; Rb is --OR.sup.1 or --NR.sup.2 R.sup.3 ; R.sup.1 is an unsubstituted lower alkyl or a lower alkyl substituted by hydroxy, lower alkoxy, amino, lower alkylamino, di(lower
SUMMARY OF THE INVENTION
The present invention relates to compounds of the formula ##STR2## wherein Ra is hydrogen or halogen; Rb is --OR.sup.1 or --NR.sup.2 R.sup.3 ; R.sup.1 is an unsubstituted lower alkyl or a lower alkyl substituted by hydroxy, lower alkoxy, amino, lower alkylamino, di(lower
SUMMARY OF THE INVENTION
The present invention relates to compounds of the formula ##STR2## wherein Ra is hydrogen or halogen; Rb is --OR.sup.1 or --NR.sup.2 R.sup.3 ; R.sup.1 is an unsubstituted lower alkyl or a lower alkyl substituted by hydroxy, lower alkoxy, amino, lower alkylamino, di(lower